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Question:
(a) Prove that every positive integer n can be factorized into a product of prime powers.
(b) State the Fermat-Euler theorem as needed in the RSA system.
(c) Using the Repeated Squaring Method, verify that with modulus 3127 and encipherment key 17 the number 0530 encipher to itself in the RSA system.
(d) Having received a message enciphered on the RSA system using his public key how can the owner of the decipherment key reply?
(e) Explain how RSA can be used for digital signatures.
(f) State the protocol based on quantum cryptography that can be used to exchange keys.
Problem (a) Give two reasons for companies to implement security measures. (b) What is the regulatory expectation regarding i. healthcare information, ii. financial
In this assignment, you are required to emulate the operation of a link layer and network layer protocols in a small computer network. Your program should behave like a single node
Assume that the RSA problem is hard, prove that the RSA encryption is secure against IND- CPA. Provide a game between an adversary A and a simulator (or challenger) B.
SHIFT OPERATION: This operation replaced all bits to the left one position. For example in the diagram below a 16-bit CRC hardware is given, which needs three Exclusive OR (
Problem (1) - Alice, Bob and Charlie have a secret key a=3, b=4, c=5, respectively. - They want to find a common secret key using Diffie-Hellan key exchange protocol (with g
ACCESS CONTROL DEVICES Successful access control system includes number of components, which depends on system’s requirements for authentication and authorization. Powerful auth
(a) (i) If m = p·q·r where p, q, and r are prime numbers, what is Φ(m)? (ii) Therefore, Determine Φ(440). (b) Describe the following terms as used in cryptography: (i)
explaain it?
Q1 (15 marks, 5 marks each part): This question has three parts: In a short paragraph (200-300 words) explain the fundamentals of Packet Switching and how it works. In a short pa
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